ICD HCC Crosswalk -- ICD RxHCC Crosswalk

CMS moved to ICD-10-CM diagnosis codes in the 2016 fiscal year which began October 1, 2015.
So, January 1 - September 30, 2015, ICD-9-CM codes were used,
and October 1, 2015 - December 31, 2015 ICD-10-CM codes are used.